Correlation of plasma sprayed coating deposition efficiency with volume flux measurements by Phase Doppler Anemometry (PDA)

P. Wang, Ching Man Yu, H.W. Ng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


The use of phase-Doppler anemometry (PDA) to characterize the detail in-flight plasma sprayed particle behavior has been demonstrated previously [Ma et al. Plasma Chem Plasma Process 24(1):85; 25(1):56] The present articles shows further that a direct relationship may exist between the PDA measured particle volume flux and the coating microstructure and deposition efficiency (DE). In the situation when the precise particle temperature information is not available, the PDA measured particle volume flux may provide an alternative to predict quantitatively the variation of the coating microstructure and the DE. By monitoring the in-flight particle volume flux variations, instead of the particle velocity, size and temperature individually and simultaneously, the optimal settings of the plasma spraying parameters may also be determined conveniently. However, it is noted that the effective applications of such approach depend largely on the particle surface morphology and the pre-determination of the particle size range. © Springer Science+Business Media, LLC 2007.
Original languageEnglish
Pages (from-to)311-336
Number of pages26
JournalPlasma Chemistry and Plasma Processing
Issue number3
Publication statusPublished - 1 Jun 2007
Externally publishedYes


  • PDA
  • Volume flux

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Condensed Matter Physics
  • Surfaces, Coatings and Films

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